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EWG's Tap Water Database — 2021 UPDATE

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Dibromochloromethane

Salem Water

Dibromochloromethane, one of the total trihalomethanes (TTHMs), is formed when chlorine or other disinfectants are used to treat drinking water. Dibromochloromethane and other disinfection byproducts increase the risk of cancer and may cause problems during pregnancy. Click here to read more about disinfection byproducts.

MORE ABOUT THIS CONTAMINANT

 

92

Samples

0

Samples exceeding legal limit (MCL)

55

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20141.29 ppb1612ND - 2.20 ppb
20151.33 ppb1614ND - 2.10 ppb
20160.731 ppb168ND - 1.70 ppb
20171.15 ppb1613ND - 1.90 ppb
20180.263 ppb164ND - 1.10 ppb
20190.375 ppb124ND - 1.20 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.1 ppb

The EWG Health Guideline of 0.1 ppb for dibromochloromethane was proposed in 2018 by the California Office of Environmental Health Hazard Assessment as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2014-01-0714010000502ND
2014-01-0714010000602ND
2014-01-0914010003202ND
2014-01-0914010003302ND
2014-04-01140930052021.10 ppb
2014-04-01140930056021.20 ppb
2014-04-01140930051021.10 ppb
2014-04-01140930050021.10 ppb
2014-07-02141840036021.70 ppb
2014-07-02141840037022.00 ppb
2014-07-02141840035022.00 ppb
2014-07-02141840034022.10 ppb
2014-11-17143240063022.10 ppb
2014-11-17143240062022.10 ppb
2014-11-17143240061022.00 ppb
2014-11-17143240060022.20 ppb
2015-01-05150080146021.60 ppb
2015-01-06150080152021.10 ppb
2015-01-06150080153021.30 ppb
2015-01-06150080151021.20 ppb
2015-04-07150990089021.30 ppb
2015-04-07150990092021.90 ppb
2015-04-0715099008802ND
2015-04-0715099008702ND
2015-07-07151890008021.20 ppb
2015-07-07151890007021.30 ppb
2015-07-07151890010021.20 ppb
2015-07-07151890009021.30 ppb
2015-10-05152790010022.10 ppb
2015-10-05152790012021.80 ppb
2015-10-05152790011022.00 ppb
2015-10-05152790013022.00 ppb
2016-01-0616008002802ND
2016-01-0616008002902ND
2016-01-0616008003002ND
2016-01-0616008003102ND
2016-04-0616098003602ND
2016-04-0616098003802ND
2016-04-0616098003502ND
2016-04-0616098003702ND
2016-07-05161890148021.70 ppb
2016-07-05161890147021.40 ppb
2016-07-05161890152021.50 ppb
2016-07-05161890153021.50 ppb
2016-10-04162800161021.30 ppb
2016-10-04162800163021.40 ppb
2016-10-04162800168021.50 ppb
2016-10-04162800162021.40 ppb
2017-01-04170050067021.10 ppb
2017-01-0417005006802ND
2017-01-0417005006902ND
2017-01-0417005006602ND
2017-04-04170960030021.000 ppb
2017-04-04170960032021.20 ppb
2017-04-04170960036021.10 ppb
2017-04-04170960033021.000 ppb
2017-07-04171870150021.50 ppb
2017-07-04171870152021.40 ppb
2017-07-04171870148021.60 ppb
2017-07-04171870151021.40 ppb
2017-10-03172780163021.80 ppb
2017-10-03172780165021.90 ppb
2017-10-03172780166021.70 ppb
2017-10-03172780167021.70 ppb
2018-01-0318004003702ND
2018-01-0318004003802ND
2018-01-03180040036021.10 ppb
2018-01-0318004003502ND
2018-04-0318095017502ND
2018-04-0318095017402ND
2018-04-0318095017902ND
2018-04-0318095017302ND
2018-07-0318186016502ND
2018-07-0318186016702ND
2018-07-0318186016602ND
2018-07-0318186016102ND
2018-10-0318277008702ND
2018-10-03182770088021.000 ppb
2018-10-03182770089021.10 ppb
2018-10-03182770090021.000 ppb
2019-01-1019011002801ND
2019-01-1019011002701ND
2019-01-1019011002901ND
2019-01-1019011002601ND
2019-07-0919191005502ND
2019-07-0919191005602ND
2019-07-0919191005802ND
2019-07-0919191005702ND
2019-10-02192760060021.10 ppb
2019-10-02192760059021.10 ppb
2019-10-02192760058021.20 ppb
2019-10-02192760051021.10 ppb